Kids learn what it means to use a letter in place of a number in an equation. They complete a series of number sequences and compose rules using letters and numbers. This is a good way to introduce the concept to elementary-aged learners.

Let the resource be part of your lesson sequence. Learners work through eight questions given as part of a PowerPoint presentation in the Claim 1 Item Slide Show series. They must come up with functions for contextual situations and...